Abstract : Advanced propulsion concepts rely on advanced propulsion materials. The Phillips Laboratory is aggressively pursuing advanced polymeric materials for use in Solid, Liquid, and Nuclear propulsion component applications. Traditional composite materials have high specific strengths, but suffer from high cost and labor intensive processing. The APC program is currently exploring thermotropic liquid crystal polymers; these materials have high specific strength and can be economically processed by traditional high volume routes such as injection molding and blow molding. Applications envisioned for these materials include rocket nozzles, pressure cases, propellant tanks and conduits, nuclear propulsion containment, fairings, high pressure tanks and orbit-processed habitats for interplanetary voyages. These proceedings contain the papers given at the Second Annual Advanced Polymer Components Symposium, which was held at the United States Air Force Academy at Colorado Springs CO. jg